Hydroxyaryl/phosphonate-derived aminoalkanol borates as multifunctional antiwear/EP load-carrying additives

A process of preparing a multifunctional antiwear/EP additive product prepared by (a) reacting hydrocarbyl hydrogen phosphonates or phosphites with aminoalkanols and aldehydes/ketones via a Mannich condensation reaction to form phosphonate-derived aminoalkanols as described below:

• ##STR5## where R.sub.1 and R.sub.2 are C.sub.1 to C.sub.30 hydrocarbyl;
• R3, R4 and R.sub.5 are hydrogen, or C.sub.1 to C.sub.60 hydrocarbyl and optionally contain sulfur, oxygen and/or nitrogen;
• x and y are the integers 1 or 2 and x+y=3;
• and (b) further reacting the resultant phosphonate-derived aminoalkanols with hydroxyaryl compounds and boronating agents to form mixed borates as described below:
• ##STR6## hydroxyaryl-phosphonate derived aminoalkanol mixed borates where R.sub.6 and R.sub.7 are hydrogen or C.sub.1 to C.sub.30 hydrocarbyl, and Z.sub.1, Z.sub.2 and Z.sub.3 are hydrogen or C.sub.1 to C.sub.60 hydrocarbyl or one of Z.sub.1, Z.sub.2, or Z.sub.3 is OH and the other two are hydrogen or C.sub.1 to C.sub.30 hydrocarbyl;
• U is a monoalkylphenol or a dialkyloxyphenol coborating agent with at least one hydroxy group having the structure R.sub.8 --(OR.sub.9 --).sub.n --OH where R.sub.8 and R.sub.9 are C.sub.1 to C.sub.30 hydrocarbyl, and n=0 to 20, W is a borating agent, selected from a member of the group consisting of boric acid, boric oxide, meta borates, or a compound of the formula (R.sub.10 O).sub.m B(OH).sub.p where R.sub.10 is a C.sub.1 to C.sub.10 alkyl group, m is 0 to 3 and p is 0 to 3, their sum being 3;
• reactions (a) and (b) are carried out at temperatures varying from ambient to about 250.degree. C. under pressure varying from ambient to about 500 psi for a time sufficient to obtain the product of reaction and where reaction (a) is carried out in molar ratios of reactants varying from, equimolar, to more than equimolar to less than equimolar and reaction (b) is carried out in molar quantities, less than molar quantities or more than molar quantities of the borating agent.

A multifunctional lubricant additive product of reaction prepared by (a) reacting hydrocarbyl hydrogen phosphonates or phosphites with aminoalkanols and aldehydes/ketones via a Mannich condensation reaction to form phosphonate-derived aminoalkanols as described below:

• ##STR7## where R.sub.1, and R.sub.2 are C.sub.1 to C.sub.30 hydrocarbyl;
• R.sub.3, R.sub.4 and R.sub.5 are hydrogen, or C.sub.1 to C.sub.60 hydrocarbyl and optionally contain sulfur, oxygen and/or nitrogen;
• x and y are the integers 1 or 2 and x+y=3;
• and (b) further reacting the resultant phosphonate-derived aminoalkanols with hydroxyaryl compounds and boronating agents to form mixed borates as described below:
• ##STR8## hydroxyaryl-phosphonate derived aminoalkanol mixed borates where R.sub.6 and R.sub.7 are hydrogen or C.sub.1 to C.sub.30 hydrocarbyl, and Z.sub.1, Z.sub.2 and Z.sub.3 are hydrogen or C.sub. to C.sub.60 hydrocarbyl or one of Z.sub.1, Z.sub.2, or Z.sub.3 is OH and the other two are hydrogen or C.sub.1 to C.sub.30 hydrocarbyl;
• U is a monoalkylphenol or a dialkyloxyphenol coborating agent with at least one hydroxy group having the structure R.sub.8 --(OR.sub.9 --).sub.n --OH where R.sub.8 and R.sub.9 are C.sub.1 to C.sub.30 hydrocarbyl, and n=0 to 20, W is a borating agent, selected from a member of the group consisting of boric acid, boric oxide, meta borates, or a compound of the formula (R.sub.10 O).sub.m B(OH).sub.p where R.sub.10 is a C.sub.1 to C.sub.10 alkyl group, m is 0 to 3 and p is 0 to 3, their sum being 3;
• reactions (a) and (b) are carried out at temperatures varying from ambient to about 250.degree. C. under pressure varying from ambient to about 500 psi for a time sufficient to obtain the product of reaction and where reaction (a) is carried out in molar ratios of reactants varying from, equimolar, to more than equimolar to less than equimolar and reaction (b) is carried out in molar quantities, less than molar quantities or more than molar quantities of the borating agent.